Discovery of Infrared Radiation
You can find this storyboard in the following articles and resources:
The Electromagnetic Spectrum
By Oliver Smith
The electromagnetic spectrum, or EM spectrum, is all around us. The activities in this guide will help students master the different types of radiation in the EM spectrum.
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Storyboard Description
Who discovered Infrared radiation? William Herschel storyboard
Storyboard Text
- Slide: 1
- This red light seems hotter than the other colors. I wonder why.
- William Herschel noticed that red light felt warmer than other colors of light.
- Slide: 2
- Using a prism, Herschel spread the light into the different colors.
- Slide: 3
- This red light seems hotter than the other colors. I wonder why.
- Using a thermometer, he measured the temperature of the different colors.
- Slide: 4
- He found it got hotter towards the red end of the spectrum.
- Slide: 5
- He moved the thermometer just outside the red light and, to his surprise, he found the temperature on the thermometer increased even more.
- Slide: 6
- Infrared
- He concluded that there must be some invisible radiation that we can't see.
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